12989000

素因数分解:

$2^3\times 5^3\times {\mathrm{31}}^1\times {\mathrm{419}}^1$

素因数の和:471

約数の個数: 64

約数和(自身を含む): 31449600

約数和(自身を除く): 18460600

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 125, 155, 200, 248, 250, 310, 419, 500, 620, 775, 838, 1000, 1240, 1550, 1676, 2095, 3100, 3352, 3875, 4190, 6200, 7750, 8380, 10475, 12989, 15500, 16760, 20950, 25978, 31000, 41900, 51956, 52375, 64945, 83800, 103912, 104750, 129890, 209500, 259780, 324725, 419000, 519560, 649450, 1298900, 1623625, 2597800, 3247250, 6494500, 12989000]

約数ペア:

[(1, 12989000), (2, 6494500), (4, 3247250), (5, 2597800), (8, 1623625), (10, 1298900), (20, 649450), (25, 519560), (31, 419000), (40, 324725), (50, 259780), (62, 209500), (100, 129890), (124, 104750), (125, 103912), (155, 83800), (200, 64945), (248, 52375), (250, 51956), (310, 41900), (419, 31000), (500, 25978), (620, 20950), (775, 16760), (838, 15500), (1000, 12989), (1240, 10475), (1550, 8380), (1676, 7750), (2095, 6200), (3100, 4190), (3352, 3875)]